Finding the Fourth Proportional to 2,551,020,121.20, 3,826,530,235.80 and 612,323,353.20
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Solution
The fourth proportional to 2,551,020,121.20, 3,826,530,235.80 and 612,323,353.20 is: 918,485,042.76
Step by Step Solution
- Step 1: Write the proportion equation
2,551,020,121.20 : 3,826,530,235.80 = 612,323,353.20 : x - Step 2: Convert to fraction form
2,551,020,121.20/3,826,530,235.80 = 612,323,353.20/x - Step 3: Cross multiply
2,551,020,121.20x = 3,826,530,235.80 × 612,323,353.20 - Step 4: Simplify right side
2,551,020,121.20x = 2,343,073,825,106,243,072 - Step 5: Solve for x
x = 2,343,073,825,106,243,072/2,551,020,121.20 - Step 6: Final answer
x = 918,485,042.76
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.